JP2017075507A - Joint part structure for exterior wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To guarantee construction easiness and cutoff performance.SOLUTION: A joint part structure 2 is formed between a pair of exterior wall panels 1A, and comprises projection dry type joint materials 3 provided on respective vertical planes 11b of the pair of exterior wall panels 1A, and a recessed dry type joint material 4 provided to be sandwiched between the projection dry type joint materials 3 of the pair of exterior wall panels 1A. The projection dry type joint materials 3 are projection members, and the recessed dry type joint material 4 is a recessed member which is mutually locked to the projection members and corresponds to the projection members, the projection dry type joint materials 3 and recessed dry type joint material 4 being elastic bodies.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a joint part structure formed at a joint part between two exterior panels that are part of an outer wall.

  As the structure formed at the joint between exterior panels such as outer wall panels, the joint structure by wet method in which a wet sealing material is placed in the joint part and the joint part structure by dry method in which dry joint material is attached to the joint part Is generally known. While the wet method can ensure high water-stopping properties, it has a drawback that the construction period becomes longer depending on the weather. In addition, the dry method has a drawback that it is difficult to ensure complete water-stopping while it is possible to ensure ease of construction.

  For example, Patent Document 1 discloses a joint material including an engaging portion formed to have a width larger than the joint width, a protruding portion protruding from the engaging portion, and a waterstop material attached to the protruding portion, A joint structure of a dry construction method constituted by a waterstop material attached to a wall panel is disclosed. In the joint structure, the joint portion of the joint material is pressed against the joint, and the waterproof material of the joint material and the waterproof material of the wall panel are brought into close contact with each other so as to improve the water stoppage in the dry construction method. Yes.

JP 2000-104358 A

  However, in the joint part structure of the above-mentioned Patent Document 1, there is a possibility that the joint part of the joint material loses its resilience over time and cannot follow the displacement of the joint width. In this case, a gap may be generated between the exterior panels. In addition, the engaging portion that has lost its resilience may be pushed out of the joint due to the repulsive force of the water-stopping material and fall off. For this reason, in the joint part structure of the said patent document 1, the improvement of a water stop cannot fully be aimed at.

  This invention is made | formed in view of the said situation, and relates to the joint part structure of an outer wall which can ensure construction ease and water stop.

  The joint part structure according to the present invention is a joint part structure formed between a pair of exterior panels, and includes a first dry joint material provided on a side surface of each of the pair of exterior panels and a pair of exterior panels. A second dry joint material provided to be sandwiched between the first dry joint material, and at least one of the first dry joint material and the second dry joint material is an elastic body. One of the first dry joint material and the second dry joint material is a convex member having a convex portion, and the other is a concave member having a concave portion that engages with each other corresponding to the convex portion. .

  In this joint part structure, one of the first dry joint material and the second dry joint material is a convex member, and the other is a concave member that engages with the convex member. Since the first dry joint material and the second dry joint material are engaged with each other, the first dry joint material and the second dry joint material are prevented from being pushed out (dropped off) from the joint portion. it can. Further, since at least one of the first dry joint material and the second dry joint material is an elastic body, for example, even when the joint width is displaced, the dry joint material in the joint structure is It is possible to appropriately follow the displacement. Furthermore, since at least one is an elastic body, the 1st dry joint material and the 2nd dry joint material which mutually latch can be press-contacted closely. By these, it can suppress that a clearance gap produces between exterior panels. By suppressing the dropout of the dry joint material and suppressing the formation of a gap between the exterior panels, it is possible to ensure water-stopping in the joint structure. Moreover, since this joint part structure is the joint part structure of a dry construction method, it can construct easily compared with the joint part structure of a wet construction method. From the above, it is possible to ensure ease of construction and water-stopping.

  Further, both the first dry joint material and the second dry joint material may be elastic bodies. Thereby, the followable | trackability with respect to the displacement of joint width and the adhesiveness between dry type joint materials can be improved more, and the water stop property in a joint part structure can be ensured more.

  Further, the first dry joint material and the second dry joint material may be bonded to each other. Thereby, the adhesiveness between dry type joint materials can be improved, and the water stop in a joint part structure can be ensured more.

  Moreover, the 1st dry joint material and the 2nd dry joint material may be adhere | attached with the wet sealing material. Thereby, each of the first dry joint material and the second dry joint material can be carried to the site in an independent state and can be bonded on the site. Thereby, workability can be improved.

  In addition, the first dry joint material, the second dry joint material, and the wet sealing material may be the same material. By using the same material, when a force is applied to the joint structure, the force applied to the first dry joint material, the second dry joint material, and the wet sealing material can be made uniform. Thereby, it can suppress that the adhesiveness between dry joint materials becomes low by applying a force biased to a part of member.

  Further, the first dry joint material may be a convex member, and the second dry joint material may be a concave member. This facilitates the joint structure by pushing in the second dry joint material having a concave shape so as to follow the convex shape of the first dry joint material provided on the side surface of each exterior panel. Can be constructed.

  Further, the width dimension of the second dry joint material may be larger than the distance between the first dry joint materials provided on the side surfaces of the pair of exterior panels. Thereby, the adhesiveness of a 1st dry joint material and a 2nd dry joint material can be improved.

  Moreover, the convex part and the recessed part are comprised by the curved surface, and the curvature of the convex part of the 1st dry joint material may be more than the curvature of the recessed part of the 2nd dry joint material. Thereby, it can suppress that a clearance gap generate | occur | produces between the 1st dry joint material and the 2nd dry joint material.

  Further, the surface of the second dry joint material may cover the surface of the joint structure. When the surface is covered with one dry joint material, the water stoppage can be further increased. Moreover, the beauty | look from the surface side of a joint part structure can be improved.

  Further, the surface of the second dry joint material may be a pattern having the same color as the surface of the exterior panel, or may be a similar multicolored pattern. Thereby, a sense of unity between the joint structure and the exterior panel can be produced, and the beauty can be further improved.

  In addition, it further includes a bottom surface portion extending from the side surface of each of the pair of exterior panels toward the facing exterior panel direction, and the maximum length in the facing exterior panel direction of the first dry joint material is the exterior panel facing the bottom surface portion. It may be shorter than the length in the direction. Thereby, in an exterior panel, the front-end | tip of a bottom face part will protrude rather than a 1st dry joint material. For this reason, when the exterior panel is stacked, and when the exterior panel is lifted by a nylon sling (band-like lifting jig) at the construction site, the first dry joint material hits other things and becomes dirty or dirty. Etc. can be avoided, and workability, adhesion, and water tightness can be further enhanced.

  According to the present invention, it is possible to ensure ease of construction and water-stopping.

It is a perspective view which shows the outer wall which concerns on embodiment of this invention. It is sectional drawing which expands and shows the joint part structure which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the state before the concave joint material installation in the joint part structure of FIG. It is a figure which shows the colorful pattern of a painting and a repair sheet | seat. It is sectional drawing which expands and shows the joint part structure which concerns on 2nd Embodiment of this invention. It is sectional drawing which expands and shows the joint part structure which concerns on 3rd Embodiment of this invention. It is sectional drawing which expands and shows the convex joint material and concave joint material which concern on a modification. It is sectional drawing which expands and shows the joint part structure which concerns on a modification. It is sectional drawing which expands and shows the joint part structure which concerns on a modification.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same elements or elements having the same functions, and repeated descriptions are appropriately omitted.

  For example, a part or all of the building outer wall 100 (see FIG. 1) includes, for example, a plurality of window frames such as an outer wall panel 1A and an open sash frame, or the outer wall panel 1A vertically and horizontally with respect to the window frame. It is formed by providing adjacently. The planar members that form the outer wall 100, such as the outer wall panel 1A and the window frame, correspond to an outer panel material (outer panel). Here, as the outer wall panel 1A, a precast reinforced concrete (PC) plate, a lightweight cellular concrete (ALC) plate, a metal curtain wall, or the like can be used. In the following embodiments, an outer wall panel assuming an ALC panel is used. 1A will be described as an example.

[First Embodiment]
First, the joint structure 2 according to the first embodiment will be described. As shown in FIG. 1, joint portions 10 are formed between adjacent outer wall panels 1 </ b> A by arranging a plurality of outer wall panels 1 </ b> A in a standing manner. That is, the joint portion 10 is formed between the pair of outer wall panels 1A. Specifically, the corners on the surface side of the small edge surface 1a (see FIG. 2) of the outer wall panel 1A are notched along the longitudinal direction, and the small edge surfaces 1a are arranged to face each other. Thereby, the joint part 10 which has a groove | channel on the surface side is formed. The joint part structure 2 is a structure formed in the joint part 10. In the following description, the “surface side” is assumed to be the side of the outer wall 100 facing the outdoors, and in particular, the side on which the joint portion 10 is formed is intended.

  As shown in FIGS. 2 and 3, the joint portion 10 includes a pair of side surface portions 11 and a pair of bottom surface portions 12. That is, the pair of outer wall panels 1 </ b> A constituting the joint portion 10 includes a side surface portion 11 and a bottom surface portion 12. The pair of side surface portions 11 are symmetrical with respect to the bottom surface portion 12, and each has a vertical surface 11 b (side surface) that rises substantially perpendicular to the bottom surface portion 12 and a joint between the vertical surface 11 b and the surface of the outer wall 100. 10 and an inclined surface 11a that is inclined so as to increase the width. The pair of bottom surface portions 12 extend from the end of the vertical surface 11b opposite to the side continuous with the inclined surface 11a toward the facing outer wall panel 1A (hereinafter sometimes referred to as “width direction”). ing.

  A convex dry joint material 3 (first dry joint material) is provided on the vertical surface 11b of each of the pair of outer wall panels 1A. Specifically, in a factory, a primer or an adhesive is applied to the vertical surface 11b of the side surface portion 11 that becomes the joint portion 10, and the convex dry joint material 3 is adhered to the primer or the adhesive, whereby the vertical surface A convex dry joint material 3 is provided at 11b. More specifically, the convex dry joint material 3 is provided in a portion of the vertical surface 11b that is continuous with the inclined surface 11a so that the surface thereof is a surface continuous with the inclined surface 11a. In addition, adhesion reliability can be improved compared with the case where the convex dry joint material 3 is adhere | attached with the side part 11 in a factory compared with the case where it adhere | attaches with the side part 11 in the field.

  The convex dry joint material 3 is a long elastic member formed in accordance with the longitudinal dimension of the joint part 10. The convex dry joint material 3 is a kamaboko type (substantially semicircular cross-section) convex member having a convex portion 3c formed of a curved surface protruding in the width direction in a state where it is bonded to the vertical surface 11b. The maximum length W1 in the width direction of the convex dry joint material 3 is shorter than the length W2 in the width direction of the bottom surface portion 12 (see FIG. 3). The convex dry joint material 3 is made of, for example, a polyurethane sealant or a modified silicone sealant, and is formed by solidifying the wet sealant. The convex dry joint material 3 that is an elastic member is not limited to one in which a wet sealing material is hardened, and may be rubber such as EPDM rubber and urethane rubber, and a foam thereof.

  A concave dry joint material 4 is provided so as to be sandwiched between the convex dry joint materials 3 of the pair of outer wall panels 1A. The concave dry joint material 4 is a long elastic member formed according to the longitudinal dimension of the joint part 10. In addition, the concave dry joint material 4 is a concave member having a concave portion 4c (see FIG. 3) formed of curved surfaces that are engaged with each other in correspondence with the convex portion 3c. The concave dry joint material 4 is made of, for example, a polyurethane sealant or a modified silicone sealant, and is formed by solidifying the wet sealant. The concave dry joint material 4 is preferably made of the same material as the convex dry joint material. In addition, the concave dry joint material 4 which is an elastic member is not limited to the one in which the wet sealing material is hardened, and may be rubber such as EPDM rubber and urethane rubber and the foam thereof.

  The concave dry joint material 4 has a side part 4a of a concave part 4c facing the convex part 3c of the pair of convex dry joint materials 3, and the side part 4a of the concave part 4c is a convex dry joint material 3. The concave portion corresponding to the convex shape of the convex portion 3c has a substantially “drum” cross section. That is, the concave dry joint material 4 is a concave member in which the side surface portion 4a of the concave portion 4c is recessed in the width direction in a state of being provided between the convex dry joint materials 3. That the side surface portion 4 a of the concave portion 4 c has a concave shape corresponding to the convex shape of the convex portion 3 c of the convex dry joint material 3 is that the concave dry joint material 4 is provided between the convex dry joint materials 3. In the state, it means that the side surface portion 4a is formed so that the side surface portion 4a and the convex dry joint material 3 are in close contact with each other. Note that the side surface portion 4a and the convex dry joint material 3 are in close contact not only with the side surface portion 4a and the convex dry joint material 3 being in direct contact but also with the side surface portion 4a and the convex dry joint material. The material 3 includes a state in which the material 3 is bonded via a wet sealing material 5 (details will be described later).

  Here, the convex dry joint material 3 has a kamaboko shape (substantially semicircular cross section), and the thickness direction of the outer wall panel 1A (hereinafter sometimes referred to as “thickness direction”) is the central portion. The width dimension is the largest, and the width dimension at both ends in the thickness direction is the smallest. Therefore, the corresponding concave dry joint material 4 has a shape in which the central portion in the thickness direction is constricted, the width dimension at the central portion in the thickness direction is the smallest, and the width dimension at both ends in the thickness direction is the largest. More specifically, the concave dry joint material 4 has the largest width dimension at the surface side end portion among the thickness direction both ends. And in the concave type dry joint material 4, the surface side edge part has a wedge shape, and thickness is very thin. Since the surface side end of the concave dry joint material 4 is thinly formed, the boundary surface between the convex dry joint material 3 and the concave dry joint material 4 is difficult to understand when viewed from the front side of the outer wall panel 1A. be able to.

  Moreover, the concave shape in the direction (namely, width direction) where convex dry joint material 3 mutually opposes rather than the separation dimension D1 of convex dry joint material 3 provided in each vertical surface 11b of a pair of outer wall panel 1A. The width D2 of the dry joint material 4 is large (see FIG. 3). The relationship between the distance D1 between the convex dry joint materials 3 and the width D2 of the concave dry joint material 4 is that the convex dry joint material 3 and the side surface portion 4a are in contact with each other (in close contact). It holds in the area of Thus, in a state where the concave dry joint material 4 is provided between the convex dry joint materials 3, both side portions 4 a of the concave dry joint material 4 are pressed by the pair of convex dry joint materials 3. Thus, the adhesion between the convex dry joint material 3 and the concave dry joint material 4 is enhanced.

  As described above, the convex dry joint material 3 and the concave dry joint material 4 have a length corresponding to the width dimension in the thickness direction, and the convex dry joint material 3 has a central portion in the thickness direction. In contrast, the concave dry joint material 4 has the largest width dimension at both ends in the thickness direction. For this reason, the convex dry joint material 3 and the concave dry joint material 4 are engaged with each other. The concave dry joint material 4 having a constricted central portion in the thickness direction is a convex dry joint material from both sides in the width direction in a state where the concave dry joint material 4 is provided between the convex dry joint materials 3. 3, the movement of the concave dry joint material 4 in the thickness direction is suppressed.

  For the portion where the convex dry joint material 3 and the concave dry joint material 4 are engaged with each other (the portion in contact with each other), the concave dry joint material 4 is not provided between the convex dry joint materials 3, that is, In a state where the concave dry joint material 4 is not pressed by the pair of convex dry joint materials 3, the maximum length in the width direction of the convex dry joint material 3 is longer than the maximum length in the width direction of the concave dry joint material 4. The maximum length in the thickness direction of the convex dry joint material 3 is longer than the maximum length in the thickness direction of the concave dry joint material 4.

  That is, the maximum length X1 in the width direction of the convex dry joint material 3 in contact with the side surface portion 4a is longer than the maximum length X2 in the width direction of the side surface portion 4a in contact with the convex dry joint material 3 and is in contact with the side surface portion 4a. The maximum length Y1 in the thickness direction of the convex dry joint material 3 is longer than the maximum length Y2 in the thickness direction of the side surface portion 4a in contact with the convex dry joint material 3 (see FIG. 3). As a result, the convex dry joint material 3 is larger than the concave dry joint material 4 in the portions that are engaged with each other. Thus, the concave dry joint material 4 in which both side surface parts 4a are pressed by the convex dry joint material 3 is provided between the convex dry joint materials 3 while being deformed in the portions that are mutually locked. Therefore, the adhesion between the convex dry joint material 3 and the concave dry joint material 4 can be further enhanced.

  In the state where the concave dry joint material 4 is provided between the convex dry joint materials 3, the surface 4 b of the concave dry joint material 4 covers the surface of the joint portion 10 in the joint structure 2. That the surface 4b of the concave dry joint material 4 covers the surface of the joint part 10 is a concave shape between the convex dry joint materials 3 so that the bottom surface part 12 is not visible when viewed from the front side of the outer wall panel 1A. It means that the dry joint material 4 is provided. Further, the curvature R1 of the convex portion 3c of the convex dry joint material 3 is set to be equal to or greater than the curvature R2 of the concave portion 4c of the concave dry joint material 4 (see FIG. 3).

  Further, the convex dry joint material 3 and the concave dry joint material 4 (more specifically, the side surface portion 4 a) are bonded together by a wet sealing material 5. The wet sealant 5 is, for example, a polyurethane sealant or a modified silicone sealant, and is preferably the same material as the convex dry joint material 3 and the concave dry joint material 4. If the surface of the outer wall panel 1A is a multicolor pattern finish, the wet sealant 5 is preferably a multicolored sealant (multicolored sealant) similar to the outer wall panel 1A or a transparent sealant. If the surface of the outer wall panel 1A is a single color finish, the wet sealant 5 is preferably a single color sealant or a transparent sealant similar to the outer wall panel 1A (similar colors). Thereby, even if the wet sealing material 5 is exposed (protruded) to the inclined surface 11a side, the wet sealing material 5 can be made inconspicuous. In the following description, it is assumed that the surface of the outer wall panel 1A has a colorful pattern finish.

  The method for bonding the convex dry joint material 3 and the concave dry joint material 4 is not limited to the method using the wet sealing material 5 described above. For example, a tape-shaped hot melt adhesive is previously applied to the convex dry joint material 3, and the hot melt adhesive is heated at the construction site to bond the convex dry joint material 3 and the concave dry joint material 4. May be. Alternatively, the convex dry joint material 3 and the concave dry joint material 4 may be bonded with another adhesive.

  A coating 15 is applied to the inclined surface 11a and a part of the surface of the convex dry joint material 3 continuous to the inclined surface 11a. For example, the coating 15 is applied to at least a portion of the surface of the convex dry joint material 3 that is not concealed by the concave dry joint material 4 when bonded to the concave dry joint material 4. The coating 15 is applied in a factory. The coating 15 is made into a multicolored pattern by a multicolored paint.

  FIG. 4 shows an example of a colorful pattern of the paint 15. The multicolored pattern is a pattern in which two or more colors are used, and a pattern form in which each color is irregularly arranged is particularly preferable. In FIG. 4, the black and black portions that are gray and gray are colored mixed grains of the multicolored paint, and the white portions are uncolored regions. Thus, in the coating 15, colored mixed grains are randomly sprayed. The multicolored paint is obtained by dispersing several kinds of colored paints having different colors as liquids or gel-like mixed liquids (colored mixed grains) of various sizes in a dispersion medium in a state where they are not dissolved in each other. As such a colorful pattern paint, an oil-in-water type and water-in-oil type colorful pattern paint in which one of the colored mixed particles and the dispersion medium is an oily system and the other is an aqueous system, and an underwater system in which both are the same system There are water-type and oil-in-oil type colorful paints. The coating 15 is formed, for example, in a factory by spraying and painting a colorful pattern paint using a spray gun.

  A repair sheet 18 is affixed to the surface 4 b of the concave dry joint material 4. The repair sheet 18 is colored with a multicolored paint similar to the coating 15 described above. Thereby, a sense of unity between the inclined surface 11a to which the coating 15 is applied and the concave dry joint material 4 to which the repair sheet is affixed can be produced, and the aesthetic appearance can be further improved. The repair sheet 18 is, for example, a flexible sheet having plasticity. The repair sheet 18 is provided so as to cover the surface 4b of the concave dry joint material 4 and at least cover a portion where the inclined surface 11a and the convex dry joint material 3 are continuous.

  Note that the makeup joint position L1 at which the makeup joint is applied on the inclined surface 11a may be on the surface side of the sealing joint position L2 where the slope surface 11a and the convex dry joint material 3 are continuous ( (See FIG. 2). That is, there is a gap between the depth of the makeup joint and the depth of the sealing joint. As a result, the repair sheet 18 can be prevented from overlapping the makeup joint, and the repair sheet 18 can be easily attached. The repair sheet 18 may be affixed on the construction site, or a part thereof may be affixed to the surface 4b in advance.

  Next, the construction method of the joint part structure 2 is demonstrated with reference to FIG.2 and FIG.3. In addition, as a premise to perform construction, as shown in FIG. 3, a plurality (a pair in FIGS. 2 and 3) of outer wall panels 1A are erected side by side in a planar shape. The vertical surface 11b of the pair of outer wall panels 1A is provided with a convex dry joint material bonded in a factory.

  In this state, first, the wet sealing material 5 is applied to the portion of the convex dry joint material 3 facing each other on the surface side of the outer wall panel 1A. Specifically, the wet sealing material 5 is driven from the surface side of the outer wall panel 1A to the surface side in the space between the pair of convex dry joint materials 3 by a dedicated extruder or the like. The wet sealant 5 is used for bonding the convex dry joint material 3 and the concave dry joint material 4. Subsequently, the concave dry joint material 4 is pushed in from the surface side of the outer wall panel 1A so that the side surface 4a of the concave portion 4c of the concave dry joint material 4 is along the convex part 3c of the convex dry joint material 3. A concave dry joint material 4 is fitted between the mold dry joint materials 3. As the concave dry joint material 4 is pushed, the wet sealing material 5 is also extended to the back side of the convex dry joint material 3, so that it protrudes over substantially the entire side surface 4 a of the concave dry joint material 4. A wet sealing material 5 can be interposed in the contact surface with the mold dry joint material 3. Finally, the repair sheet 18 is attached to the surface 4 b of the concave dry joint material 4. In addition, the said construction method is an example and the construction method of the joint part structure 2 is not limited to this.

  Next, the effect of the joint structure 2 according to the first embodiment will be described.

  Conventionally, as a joint structure between exterior panels such as outer wall panels, there are a joint structure by a wet method in which a wet sealing material is placed on the joint part and a joint structure by a dry method in which a dry joint material is attached to the joint part. Are known.

  While the wet method can ensure water-stopping, there is a drawback that the construction period becomes long. In other words, whether or not the wet construction method can be implemented depends on the weather, so that the construction period may be long depending on the weather. In addition, the wet construction method includes a step of placing a wet sealing material on the joint with a cylindrical sealing gun, a step of extending the wet sealing material with a spatula to finish the surface, and a step of performing finish coating from above the wet sealing material. As a result, the construction period becomes longer.

  In addition, the dry method has a drawback that it is difficult to ensure complete water-stopping while it is possible to ensure ease of construction. That is, when the dry sealant cannot follow the displacement of the joint width and a gap is generated between the outer wall panels, the dry sealant may fall out of the joint part, etc. Can not.

  In the joint part structure 2 according to the first embodiment, the convex dry joint material 3 that is a convex member and the concave dry joint material 4 that is a concave member are engaged with each other. More specifically, in the state in which the concave dry joint material 4 is provided between the convex dry joint materials 3, the convex dry joint material 3 has the largest width dimension at the central portion in the thickness direction, whereas the concave dry joint material 3 has the largest width. The joint material 4 has the largest width dimension at both ends in the thickness direction. For this reason, the convex dry joint material 3 and the concave dry joint material 4 are engaged with each other. The concave dry joint material 4 having a constricted central portion in the thickness direction is provided so as to be sandwiched between a pair of convex dry joint materials 3, and the convex dry joint material 3 is formed from both sides in the width direction. Since it is pressed, the movement of the concave dry joint material 4 in the thickness direction is suppressed, and the concave dry joint material 4 can be suppressed from being pushed out (dropped off) from the joint part 10.

  Moreover, in the joint part structure 2 which concerns on 1st Embodiment, since both the convex type dry joint material 3 and the concave type dry joint material 4 are elastic bodies, the length (joint width) of the joint part 10 in the width direction is temporarily. Even in such a case, the convex dry joint material 3 and the concave dry joint material 4 can appropriately follow the displacement. Furthermore, since both are elastic bodies, the convex dry joint material 3 and the concave dry joint material 4 which are locked to each other can be brought into pressure contact with each other. By these, it can suppress that a clearance gap produces between 1 A of outer wall panels. By preventing the concave dry joint material 4 from falling off and suppressing the formation of a gap between the outer wall panels 1A, it is possible to ensure water-stopping in the joint structure 2.

  Furthermore, since the joint part structure 2 is a joint part structure by a dry construction method in which the waterproof type is ensured by attaching the convex dry joint material 3 and the concave dry joint material 4 which are dry joint materials to the joint part 10, the wet construction method. Compared with the joint part structure, it can be easily constructed. From the above, according to the joint part structure 2 according to the first embodiment, it is possible to ensure ease of construction and water stoppage.

  In the joint part structure 2, both the convex dry joint material 3 and the concave dry joint material 4 are elastic bodies, thereby further improving the followability to the joint width displacement and the adhesion between the dry joint materials. It is possible to secure the water stoppage in the joint structure 2.

  Further, the convex dry joint material 3 and the concave dry joint material 4 are bonded to each other. Thereby, the adhesiveness between dry type joint materials is improved, and the water stop property in the joint part structure 2 is further ensured. Further, the convex dry joint material 3 and the concave dry joint material 4 are bonded by a wet sealant 5. Thereby, the convex dry joint material 3 and the concave dry joint material 4 can be carried to the site in an independent state and can be bonded together. Thereby, workability can be improved.

  Moreover, when the convex dry joint material 3, the concave dry joint material 4, and the wet sealant 5 are made of the same material, the adhesion between the dry joint materials can be further enhanced. That is, for example, when a large force is applied to the joint structure 2 due to an earthquake or the like, the convex dry joint material 3, the concave dry joint material 4, and the wet sealing material 5 are made of the same material. The applied force can be made uniform, and the adhesion between the dry joint materials can be suppressed from being reduced due to the bias applied to some components.

  Further, the convex dry joint material 3 provided on the vertical surface 11b of the pair of outer wall panels 1A is a convex member, and the concave dry joint material 4 provided between the convex dry joint materials 3 is a concave member. The joint structure can be easily constructed. That is, a concave shape is formed from the surface side of the outer wall panel 1A so that the side surface portion 4a of the concave dry joint material 4 is along the convex shape of the convex dry joint material 3 provided on the vertical surface 11b of the pair of outer wall panels 1A. When the dry joint material 4 is pushed in, the joint structure can be easily constructed.

  Moreover, the width dimension D2 of the concave dry joint material 4 is larger than the separation dimension D1 between the convex dry joint materials 3 provided on the vertical surfaces 11b of the pair of outer wall panels 1A. The relationship between the distance D1 between the convex dry joint materials 3 and the width D2 of the concave dry joint material 4 is that the convex dry joint material 3 and the side surface portion 4a are in contact with each other (in close contact). It holds in the area of As a result, both side portions 4a of the concave dry joint material 4 are pressed by the pair of convex dry joint materials 3, and the adhesion between the convex dry joint material 3 and the concave dry joint material 4 is enhanced. be able to.

  In addition, with respect to the portion where the convex dry joint material 3 and the concave dry joint material 4 are engaged with each other (the portion in contact with each other), the concave dry joint material 4 is not provided between the convex dry joint materials 3. That is, in the state where the concave dry joint material 4 is not pressed by the pair of convex dry joint materials 3, the maximum length X1 of the convex dry joint material 3 in the width direction is the maximum length in the width direction of the concave dry joint material 4. The maximum length Y1 of the convex dry joint material 3 in the thickness direction is longer than the maximum length Y2 of the concave dry joint material 4 in the thickness direction. Thereby, it can be set as the aspect whose convex shape is larger than a concave shape in the part which mutually latches. By this, the adhesiveness of the convex dry joint material 3 and the concave dry joint material 4 can be improved more.

  Further, the convex portion 3 c of the convex dry joint material 3 and the concave portion 4 c of the concave dry joint material 4 are formed of curved surfaces, and the curvature R1 of the convex portion 3 c of the convex dry joint material 3 is the same as that of the concave dry joint material 4. The curvature R2 of the recess 4c is greater than or equal to R2. Thus, the convex arc portion of the convex dry joint material 3 comes into contact with the side surface portion 4a of the concave dry joint material 4, and a gap is generated between the convex dry joint material 3 and the concave dry joint material 4. Can be suppressed.

  Further, the surface 4 b of the concave dry joint material 4 covers the surface of the joint part 10 in the joint part structure 2. Thereby, while being able to ensure water-stopping reliably, the beauty from the surface side of the joint part structure 2 can be improved because the bottom face part 12 is not visually recognized.

  Moreover, the bottom part 12 extended toward the outer wall panel 1A direction (width direction) which opposes from the perpendicular | vertical surface of a pair of outer wall panel 1A is provided, and the maximum length W1 of the width direction of the convex dry joint material 3 is the following. The bottom surface portion 12 is shorter than the length W2 in the width direction. Thereby, in the outer wall panel 1A, the front-end | tip of the bottom face part 12 protrudes rather than the convex dry joint material 3. FIG. Therefore, when the outer wall panel 1A is stacked and when the outer wall panel 1A is lifted by a nylon sling, it is possible to prevent the convex dry joint material 3 from being damaged by other objects and being soiled. , Adhesion and water tightness can be further improved.

[Second Embodiment]
Next, with reference to FIG. 5, the structure (joint part structure 2A) formed in the joint part 10A according to the second embodiment will be described. In the joint part structure 2A according to the second embodiment, the difference from the joint part structure 2 according to the first embodiment will be mainly described, and the same elements and structures are denoted by the same reference numerals and detailed. Description is omitted.

  In the joint part structure 2 according to the first embodiment, the repair sheet 18 is affixed to the surface 4b of the concave dry joint material 4, whereas in the joint structure 2A according to the second embodiment, the concave dry joint material 4 is provided. The surface 25b is painted 25 (on-site coating). The coating 25 is a multicolored paint similar to the coating 15. The coating 25 is applied to the upper surface of the coating 15 that is continuous with the surface 4 b together with the surface 4 b of the concave dry joint material 4. The coating 25 is applied at the construction site. That is, in the first embodiment, an example in which the repair sheet 18 is attached to the surface 4b at the construction site has been described. 25 is applied.

  In such joint structure 2A, the same multicolored paint (paint 15 or paint 25) is applied to all the regions visually recognized from the surface side. For this reason, the beauty from the surface side of joint part structure 2A can be improved more. Moreover, since the repair sheet 18 used in the first embodiment is not necessary, it is possible to ensure aesthetics while reducing the number of articles.

[Third embodiment]
Next, with reference to FIGS. 6A and 6B, a structure (joint structure 2B) formed in the joint 10B according to the third embodiment will be described. In the joint part structure 2B according to the third embodiment, the difference between the joint part structure 2 according to the first embodiment and the joint part structure 2A according to the second embodiment will be mainly described. Are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the joint part structure 2B according to the third embodiment, a coating film 35 (preceding coating film) formed in advance in a factory or the like is provided on the surface 4b of the concave dry joint material 4. The coating film 35 is a coating film formed by a multicolored paint similar to the coating 15 applied to the surface of the outer wall panel 1A, that is, the surface such as the inclined surface 11a. By providing the coating film 35, the surface 4b (more specifically, the upper layer of the surface 4b) of the concave dry joint material 4 is applied to the surface of the outer wall panel 1A (more specifically, the inclined surface 11a and the like). The same multicolored pattern as that of 15).

  In such a joint structure 2B, a sense of unity between the joint structure and the outer wall panel 1A can be produced, and the aesthetics can be further improved. Further, since the coating film 35 is a preceding coating film previously formed in a factory or the like, the work of applying the repair sheet 18 and the work of applying the coating 25 at the construction site are not required, and the ease of construction is improved.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, the convex dry joint material 3 has been described as a kamaboko-type (substantially semicircular cross-section) convex member, and the concave dry joint material 4 has been described as a concave member having a concave shape corresponding to the shape. Each convex shape (or concave shape) is not limited to this as long as the mold dry joint material and the concave dry joint material are engaged with each other. That is, as shown in FIG. 7A, a convex dry joint material 3x that is a triangular convex member, and a concave dry joint material 4x that is a concave member having a concave shape corresponding to the triangular shape. As shown in FIG. 7 (b), the structure may be a structure that locks each other, and has a convex dry joint material 3 y that is a trapezoidal convex member and a concave shape corresponding to the trapezoidal mold. The concave dry joint material 4y, which is a concave material, may be engaged with each other, and as shown in FIG. 7C, a convex dry joint material 3z, which is a pentagonal convex member, The concave dry joint material 4z which is a concave member having a concave shape corresponding to the pentagonal mold may be engaged with each other.

  Moreover, although the surface side edge part was demonstrated in the concave dry joint material 4 as the wedge shape, it is not limited to this. In the concave dry joint material 4, all of the side surface parts 4 a have a concave shape corresponding to the convex shape of the convex dry joint material 3, so that the surface side end portion has a wedge shape as described above. On the other hand, for example, as shown in FIG. 8, in the case where the convex dry joint material 3v is provided in a portion that is continuous with the bottom surface portion 12 in the vertical surface 11b, the concave dry joint material 4v has the side surface portion 4p. Of these, only the portion facing the convex dry joint material 3v is a concave shape, and the portion facing the vertical surface 11b is a flat shape extending along the vertical surface 11b. When such a concave dry joint material 4v is used, a portion extending along the vertical surface 11b of the side surface portion 4p is in a state where the concave dry joint material 4 is provided between the convex dry joint materials 3v. It is in close contact with the vertical surface 11b.

  Further, the bottom surface portion 12 may not necessarily be provided. For example, as illustrated in FIG. 9, the joint portion structure described above is formed between the outer wall panels 1 </ b> B where the bottom surface portion 12 is not provided. Also good. The first dry joint material provided on the side surface of the outer wall panel 1A is a concave member, and the second dry joint material provided so as to be sandwiched between the first dry joint materials is a convex member. Also good. In addition, at least one of the first dry joint material and the second dry joint material may be an elastic body. Further, the first dry joint material and the second dry joint material do not necessarily have to be bonded to each other.

  DESCRIPTION OF SYMBOLS 1A, 1B ... Outer wall panel, 2, 2A, 2B ... Joint part structure, 3, 3v, 3x, 3y, 3z ... Convex type dry joint material, 3c ... Convex part, 4, 4v, 4x, 4y, 4z ... Concave type dry type Joint material, 4b ... surface, 4c ... concave, 5 ... wet sealing material, 10, 10A, 10B ... joint portion, 11b ... vertical surface (side surface), 12 ... bottom surface portion.

Claims (12)

A joint structure formed between a pair of exterior panels,
A first dry joint material provided on each side of the pair of exterior panels;
A second dry joint material provided to be sandwiched between the first dry joint materials of the pair of exterior panels,
At least one of the first dry joint material and the second dry joint material is an elastic body,
One of the first dry joint material and the second dry joint material is a convex member having a convex portion, and the other is a concave member having a concave portion that is locked to each other corresponding to the convex portion. Is,
Joint structure.   The joint structure according to claim 1, wherein both the first dry joint material and the second dry joint material are elastic bodies.   The joint structure according to claim 1 or 2, wherein the first dry joint material and the second dry joint material are bonded to each other.   The joint part structure according to claim 3, wherein the first dry joint material and the second dry joint material are bonded together by a wet sealant.   The joint structure according to claim 4, wherein the first dry joint material, the second dry joint material, and the wet sealing material are the same material.   The joint structure according to claim 1, wherein the first dry joint material is the convex member and the second dry joint material is the concave member.   The joint part structure according to claim 6, wherein a width dimension of the second dry joint material is larger than a separation dimension between the first dry joint materials provided on the side surfaces of the pair of exterior panels. The convex portion and the concave portion are formed of curved surfaces,
The joint structure according to claim 6 or 7, wherein a curvature of the convex portion of the first dry joint material is equal to or more than a curvature of the concave portion of the second dry joint material.   The joint part structure according to any one of claims 6 to 8, wherein a surface of the second dry joint material covers a surface of the joint part structure.   The joint part structure according to claim 9, wherein a surface of the second dry joint material has a similar color pattern to the surface of the exterior panel.   The joint structure according to claim 9, wherein the surface of the second dry joint material has a multicolored pattern similar to the surface of the exterior panel. A bottom surface portion extending from the side surface of each of the pair of exterior panels toward the facing exterior panel direction;
The joint portion according to any one of claims 1 to 11, wherein a maximum length of the first dry joint material in the facing exterior panel direction is shorter than a length of the bottom surface portion in the facing exterior panel direction. Construction.

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